Global Patent Index - EP 0774187 A1

EP 0774187 A1 19970521 - ELECTROMAGNETIC INTERFERENCE ISOLATOR

Title (en)

ELECTROMAGNETIC INTERFERENCE ISOLATOR

Title (de)

TRENNUNGSGERÄT FÜR ELEKTROMAGNETISCHE STÖRUNGEN

Title (fr)

ISOLATEUR D'INTERFERENCE ELECTROMAGNETIQUE

Publication

EP 0774187 A1 19970521 (EN)

Application

EP 95926449 A 19950725

Priority

  • GB 9501754 W 19950725
  • GB 9415726 A 19940803
  • GB 9421475 A 19941025

Abstract (en)

[origin: WO9604737A1] A termination is provided for a differential transmission line such as unshielded twisted pair (UTP) to isolate a connected device from electromagnetic interference present on the UTP in the form of differential mode and common mode noise. An example of an electromagnetic interference isolator comprises a common mode and a differential mode termination (24, 25), a common mode choke (26) which exhibits substantially constant impedance over a wide bandwidth and a centre tapped isolation transformer (27).

IPC 1-7

H04L 25/02; H04L 25/08

IPC 8 full level

H03H 7/09 (2006.01); H01P 1/26 (2006.01); H03H 7/00 (2006.01); H04B 3/30 (2006.01); H04B 15/00 (2006.01); H04L 25/02 (2006.01); H04L 25/08 (2006.01)

CPC (source: EP US)

H04L 25/0266 (2013.01 - EP US); H04L 25/08 (2013.01 - EP US)

Citation (search report)

See references of WO 9604737A1

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

WO 9604737 A1 19960215; AU 3083595 A 19960304; CA 2196601 A1 19960215; EP 0774187 A1 19970521; JP H11505677 A 19990521; US 5659273 A 19970819; US 5825259 A 19981020

DOCDB simple family (application)

GB 9501754 W 19950725; AU 3083595 A 19950725; CA 2196601 A 19950725; EP 95926449 A 19950725; JP 50629096 A 19950725; US 51007195 A 19950801; US 82358397 A 19970325